Patent GB-1477598-A (GB)
Title: Device for applying sliders to slide fasteners
IPC: A44B19/62
Filed: 1975-10-30
Abstract: 1477598 Device for applying sliders to slide fasteners MANIFATTURA MAGNI DANTE & C SpA 30 Oct 1975 44875/75 Heading E2S A device 2 for the mechanical application of a slider A to the two series of fastening elements B, B carried by carrier tapes C, C of a slide fastener of a garment, comprises two parallel upright plates 5, 5a one 5 of which has an upwardly directed extension 6 provided with an opening, an exchangeable support element 7 mounted on the one plate 5 in correspondence with the opening in the extension to receive and support the slider to be applied, a first fluid pressure cylinder 9 mounted on the extension, a pressing element 11 actuable by the cylinder 9 to lock the slider on the support element 7, and a pair of parallel grippers 16, 20, and 16, 20, arranged on each of two opposite sides of the support element and actuable to grip one pair of ends of the carrier tapes C, C and so to draw the tapes through the slider, the grippers 16, 20 being carried by a slide member 13 slidably mounted on elongate guides 12 extending between the two upright plates 5, 5a and being actuable by a second fluid pressure cylinder 24. As shown, each upper gripper 20 is carried by a cross beam 19 which is connected to the upper ends of a pair of levers 18 pivoted, at 17, to the sides of the slide member 13, which is acted upon by pairs of springs 14, 15, each upper gripper 20 being urged away from the corresponding lower gripper 16 by a spring 21 and the piston rod 23 of the cylinder 24 being connected to a pin 22 which interconnects the lower ends of the levers 18. In operation, a slider A is placed upon the support 7 with its pull tab, not shown, accommodated in a slot 8 and an operator then presses a pedal (28) which actuates a valve (26), Fig. 1 not shown, so that pressure fluid is conveyed to the cylinder 9 to cause the pressing element 11 to descend and clamp the slider onto the support 7. The operator then feeds the stringers C, B into the slider A until the ends of the tapes C, C lie between the pairs of gripper jaws 16, 20 and 16, 20. A second pedal (29) is subsequently operated to open a valve (27) and allow pressure fluid to actuate the cylinder 24 and pivot the levers 18 so that the upper jaws 20 close upon the lower jaws 16 and clamp the two tapes C, C, further displacement of the rod 23 pulling the tapes through, and engaging the fasteners B, B in the slider A. On releasing the pedals (28, 29) the cylinders 9, 24 are reset and the garment can be withdrawn from the device. In a modification, Figs. 5, 6 not shown, a device for inserting an end stop staple into an end of the slide fastener comprises an arm (32) which is pivotally mounted at (30, 31) to the plate (5a), is maintained in its upper, inoperative, position by a torsion spring (31), and carries at its free end, on its under face, a magazine (34) of metallic staples, and on its upper face, a spring-loaded driver mechanism 36 which is operated by a cylinder (44). The latter first lowers the arm (32) to locate the end of the magazine (34) over the portion of the tapes C, C which are supported by an adjustable clamping device (46), and then operates the driver mechanism to insert a staple into the tapes. The staple-inserting device, which can be replaced by a device for welding plastics end stop material, can be operated by hand control means or, by an automatic control deriving from the movement of the grippers. 1477630 Road sweeping machines LEE FORD (LONDON) Ltd 3 Sept 1974 [28 Sept 1973] 45404/73 Heading E1G A road sweeping attachment for the front 88 of a vehicle comprises a rotary brush 10 carried by a frame assembly which includes a ball joint 46 providing (a) a vertical axis 52 for swinging adjustment of the brush for sweeping at an angle to the vehicle axis and (b) a horizontal axis for free lateral tilting on uneven surfaces, the ball 46 being fixed between upper and lower horizontal plates 48, 50 of a fixed frame 86 and engaging a socket in a plate (or, as shown, a pair of plates) 30 welded to a swinging frame member 28 on which the brush is mounted, the plates 30 extending horizontally rearwardly, to stays 54, 56, and carrying rods 76, 78 providing curved bearing surfaces riding on the inner faces of the opposed plates 48, 50. The rods 76, 78 allow limited tilting of the swinging frame 28-30-54-56 about an axis through the ball 46 perpendicular to the brush axis, and also permit the brush and frame to be swung about the vertical axis 52 (by means not shown) to adjust the angle of sweep. The brush may be driven by a hydraulic or electric motor and rotates in a housing 14 yieldably mounted by pivots 20 and a shock absorber 22 on a frame part 16-18 which is raised and lowered about pivots 42 by a ram 68. The shock absorber 22 comprises a spring encircling a hydraulic damper.